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      08-13-2023, 02:10 AM   #53
jagus
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Drives: M3F80 - 135i N54 - 2x328ie36
Join Date: Dec 2022
Location: Switzerland

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Quote:
Originally Posted by tomlong View Post
Do not have the remove the fan. Thermostat can be access from the bottom. 3 bolts and will require an extension to reach.
I finally replaced the water pump and the thermostat. For this, I did not completly removed the fan, just pushed it downwards until having enough room to work on the water pump.

However, the coolant/oil temperature behavior did not change after doing a road test.

Coolant rises temp until ~220F, time at which the fan starts working and it goes down to 180F. On road driving, the coolant stays between 170-185F on "Confort driving".

The oil temp oscillates around 200-210F, when before, it was around 220-230F.

I would say that my car is around 20F lower than it should be...

Could it be that the coolant temperature sensor is failing?
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